Ruler



NITED STATES PATENT OFFICE.

MONROE GREEN, OF BROOKLYN, NEW YORK.

RULER.

SPECIFICATION forming part of Letters Patent No. 294,870, dated March 11, 1884.

' Application filed June 12, 1883. (No model.)

The invention consists in a ruler on which a longitudinal frame is held, between the wires of which a stylographic or like pen is held,

A which, if drawn lengthwise through the frame,

draws a line. The said frame is pressed upward by springs, so that the point of the pen will not be on the paper when the pen is not in actual use.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate cor responding parts in both the figures.

Figure 1 is a plan view of my improve ruler. Fig. 2 is an end elevation of the same.

A frame, A, formed of two parallel rods or wires, B, united at the ends, and placed a short distance apart, is placed on a ruler, O, in such a manner that one wire B will be above the edge of the ruler, and the other wire B will be a short distance from the edge of the ruler, both wires being parallel with the ruler. The

end pieces of the frame A rest on springs D,

fastened to the ruler. The springs can consist of spring-strips secured on the top of the ruler, or of spiral springs secured to and resting on projections E on the front edges-of the ruler, which springs always press the frame upward, so that it will be raised above the top of the ruler. F, having a point of the usual construction, is held between the rods or wires B of the frame, the said rods or wires passing into notches or recesses in the pen. The rods thus hold the pen, but permit moving the same parallel A suitable strip or wire, G,

with the ruler.

A short stylographic or like pen,

is arranged along the edge of the ruler outside of and to guide the pen. The pen is provided with an ink-receptacle, H, which also serves as a handle. As the frame A is pressed upward, it keeps the point of the pen from the surface of the sheet on which the ruler rest-s. If a line is to be drawn the pen is pressed down, whereby the point of the pen will come in contact with the paper, the springs Ebeing compressed. The pen is then moved the desired length. along the ruler, and as soon as the pen is released the springs raise it again. As the pen is raised as soon as it is released, it cannot deface or blot the paper. As the pen is guided by the frame A, it will always draw straight lines parallel with the ruler.

The pen used can be of any desired suitable construction.

Having thus described my invention,what I claim as new, and desire to secure by Letters Patent, is

1. The combination, with a ruler provided with a longitudinal frame forming ways, of a pen held in said ways and free to slide back and forth therein, substantially as herein shown and described.

2. The combination, with a ruler, of a 1011- gitudinal frame held on the top of the same, springs for pressing the frame upward, and a pen held to slide in the frame, substantially as herein shown and described.

3. The combination, with the ruler G, of the frame A, the springs D, for pressing the frame A upward, and of the guide-strip G, substantially as herein shown and described.

4. The combination, with the ruler O, of the frame A, held on the same, and the pen F, held between the wires or rods Bof the frame, the pen being provided with recesses or notches for receiving the rods, substantially as herein shown and described.

MONROE GREEN.

- \Vitnesses:

OSGARF. GUNZ, O. SEDGWIOK. 

